US PATENT SUBCLASS 175 / 4.52
.~ With wall engaging packer or anchor


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



175 /   HD   BORING OR PENETRATING THE EARTH

2  DF  BORING WITH EXPLOSION IN INACCESSIBLE HOLE {12}
4.52.~ With wall engaging packer or anchor


DEFINITION

Classification: 175/4.52

(under subclass 2) Subject matter directed to means engaging the hole wall or a tubular member in the hole to (1) block fluid flow between the explosive apparatus and the hole wall or member or (2) attach the explosive apparatus to the hole wall or other wall in the hole so as to resist the action of gravity or a lifting force.

(1) Note. The means to block fluid flow or attach the explosive apparatus must be insertable from above ground to coact with the hole wall or a prepositioned tubular member in the hole.

SEE OR SEARCH CLASS

102, Ammunition and Explosives,

319, for a well torpedo with anchoring means or a well wall contacting guide or buffer.